Module ERF in SPECFUN

• SPECFUN Information

• Components
  • Fullsource from NETLIB
  • Source from NETLIB
  • Test from NETLIB

ERF

 
Evaluates erf(x), erfc(x), and exp(x*x)*erfc(x) for a real argument x. Uses
rational functions that theoretically approximate erf(x) and erfc(x) to at
least 18 significant decimal digits.
 
Classes  :  C8a . Error functions, their inverses, integrals, including the
                normal distribution function
 
Type     : Fortran subroutine in SPECFUN package.
Access   : Public domain. Portable.
Precision: Single or double.
Note     : Both single and double precision versions can be extracted from the
           supplied source with simple editing changes.
 
Usage    : S = ERF(X); S = ERFC(X); S = ERFCX(X)
 
Details  : Fullsource Source Test
Sites    : (1) NETLIB
 

Implementation of ERF from SPECFUN on NETLIB

 
NETLIB:    Public access repository, The University of Tennessee at
           Knoxville and Bell Laboratories
 
Precision: Single or double.
Note     : Both single and double precision versions can be extracted from the
           supplied source with simple editing changes.
 
You may access components from NETLIB outside GAMS as follows.
 
   Source       : echo "send only erf from specfun" | mail netlib@ornl.gov
   Fullsource   : echo "send erf from specfun" | mail netlib@ornl.gov
   Test         : echo "send erftst from specfun" | mail netlib@ornl.gov